package com.project.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.project.entity.BlockNumber;
import org.apache.ibatis.annotations.Select;

import java.math.BigInteger;

public interface NumberMapper extends BaseMapper<BlockNumber> {

    @Select("select start_number from block_number where id=1")
    BigInteger getNumber();
}
